Railroad-rail.



"N6. 874,788, P'AIENTED DEC. 24 1907.

W. MOGAFFBRTY.- RAIL-ROAD RAIL.

APPLICATION I ILED JAN. 29, 1907.

I UNITED "sTATEs PATENT OFF CE.

- 1 WALTER MCQAFFERTY,

0 BUTTE, MONTANA.

RAILROAD-RAIL.

' I I Specification of'Letters Patent.

Patented Dee 24, 1907.

application filed Jam 2a 1907'. SerialNO. 364,653.

To all whom it may concern Be it known that I, WALTER MCCAFFERTY, acitizen of the-United States, residing at Butte, in the countyofSilverbow, State of. Montana, have invented certain new and usefulImprovements in Railroad-Rails; and I do hereby declarethe following tobe a full, clear, and exact description ofthe invention, such as willenable others skilled in the art'to which it" appertains to make and-usethe same. v

This invention relates to railroad rails, and more particularly tothatclass known as compound rail-s, Thefact that such rails must be formedin such a manner that the sections composing the same will be rigidlyand securely held in relative vposition is readily appreciable, -andhence the object of my. invention is to' produce a] railxof this classof such construction that it will satisfy this condition. e p

Broadly speaking, the rail embodying my invention comprises a pair ofsections,

namely-abase sectionand a tread section,

and the tread section includes a kerfed flange in which a flange, formedupon the base, section,- isreceived, the flanges of the two sectionsbeing bolted together in this position.

In carrying out myinvention theopp'osing sides of the kerf in the flangeupon the tread portion are converged upwardly and the flange upon thebase portion is also ta ered upwardly and is ada ted to be snug yreceived in the kerf, it. eing understood thatthe initial passage ofajtrain over the track will serve to wedge the two sections together andto prevent their movement. with respectto each other: 1 Intheaccompanying drawings; Figure 1 is a side elevation of a section ofrail constructed in accordance with my invention,"

Fig. 2 is a detail vertical sectional view takentransverselythrough therail before the bolts are applied, and, Fig. 3 is asimilar view showingthe relation of therail sections after the bolts are applied v Referringmore specifically'to the drawings, the rail is shown as being formed ofa portion which is oftheusual form and a or bifurcated as at 8, thewalls of the kerf or bifurcation being converged. upwardly as clearlyshown in F gs. 2 and 3. Formed integral with the base section- 6 is anupstanding flange 9, the'side faces of which are converged upwardly sothat in-reality the 'fiange is a tapered one.

Formed through the flange 9 is an opening 10 and openings 11 are formedthrough the spaced portions of the flange 7. As shown in Fig. 2 of thedrawing these openings only aline when the tread section is in properposition upon the base section and as the flange 9 is verysnuglyreceived in the bifurcation or kerf of the flange 7, the treadportion is to be pressed down upon the base portion until the openings10 and 11 do aline after which bolts 12 are'e'ngaged through theopenings and serve veryeflectually to 'revent the separation of thesections forms in the rail. Furthermore,the fact that the tread sectionis'so snugly received upon the base section renders itobviou's thatjthebolts 12 will be considerably relieved of strain.

In forming a length of rail from my secdepending integral flange 7 whichis kerfedtions, each tread section is placed directlyoverthe junction,of the two-base sections,

the isaid bifurcated flange being provided with bolt openings whichaline, the bifurcaas clearly shown in Fig. 1, and the bolt open- 1 tionin the flange of the tread section being engagement through the openingsat such of such dimensions as to completely receive time. p, v theupstanding flange of the base section only" In testimony whereof, Iaflix my signature, when initial pressure has been applied upon inpresence of two witnesses.

the said tread section, the bolt openingsin WALTER MCOAFFERTYL theflange of the base and tread sections be- 'Witnesses:

ing adapted to re ister only after such presv I JOHN MCGRATH,

sure has been applied, and bolts adapted for GERMAN;

